--- old/src/hotspot/os_cpu/solaris_sparc/count_trailing_zeros_solaris_sparc.hpp 2020-05-20 18:09:47.665357309 -0700 +++ /dev/null 2020-03-09 18:57:19.455001459 -0700 @@ -1,41 +0,0 @@ -/* - * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - * - */ - -#ifndef OS_CPU_SOLARIS_SPARC_COUNT_TRAILING_ZEROS_SOLARIS_SPARC_HPP -#define OS_CPU_SOLARIS_SPARC_COUNT_TRAILING_ZEROS_SOLARIS_SPARC_HPP - -#include "utilities/globalDefinitions.hpp" - -inline unsigned count_trailing_zeros(uintx x) { - assert(x != 0, "precondition"); - // Reduce to mask with ones in all positions below the least - // significant set bit of x, and zeros otherwise. - uintx rx = (x - 1) & ~x; // sub x, 1, rx; andn rx, x, rx; - // Then count the set bits in the reduction. - uintx result; - __asm__(" popc %1, %0\n\t" : "=r" (result) : "r" (rx)); - return result; -} - -#endif // OS_CPU_SOLARIS_SPARC_COUNT_TRAILING_ZEROS_SOLARIS_SPARC_HPP